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Cleveland C46431 port tool, bright finish, .437 inch diameter, 4.313 inch length

Cleveland

Cleveland C46431 Port Tool .437" dia. 4.313" L

SKU CH-Q6K4-YWWNF

A high-speed steel counterbore with a 0.437 inch diameter and 4.313 inch length for interchangeable pilots

  • High-speed steel construction resists wear during repeated counterboring
  • .437 inch diameter matches standard pilot dimensions for precise alignment
  • 313 inch overall length provides reach in deep cavities
  • Bright finish reduces friction and eases chip evacuation
  • Counterbore design accepts interchangeable pilots for versatile hole preparation

Precision Port Tool for Machinists

The Cleveland C46431 is a counterbore tool designed for machinists and maintenance technicians who need to create precise recesses for interchangeable pilots. It suits workshops handling general fabrication or repair tasks where accurate hole preparation is required before pilot installation.

High-Speed Steel Limits in Hard Materials

The high-speed steel construction provides good wear resistance for standard steel and cast iron workpieces. Cutting performance drops significantly in hardened alloys or abrasive composites, so operators should restrict use to conventional ferrous metals to maintain edge life and dimensional accuracy.

Bright Finish and Shank Implications

The bright finish offers no corrosion protection, so the tool must be wiped and oiled after each use to prevent surface rust. The standard shank fits common drill presses and milling machines, but the 4.313 inch overall length limits access in deep cavities or tightly fixtured setups.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $112.99
Pricier than about 85% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

Which diameter and length combination matches the Cleveland C46431 port tool?

The Cleveland C46431 port tool has a .437 inch diameter and a 4.313 inch overall length.

How does the .437 inch diameter perform when counterboring for an interchangeable pilot?

The .437 inch high-speed steel cutter creates the precise counterbore needed to seat an interchangeable pilot securely in the workpiece.

What shank standard does the Cleveland C46431 use and what does it limit?

The tool uses a standard 1/2 inch shank, which limits use to holders or chucks that accept that shank size.

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